(19)
(11) EP 0 264 244 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.11.1988 Bulletin 1988/46

(43) Date of publication A2:
20.04.1988 Bulletin 1988/16

(21) Application number: 87308991

(22) Date of filing: 12.10.1987
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 11.10.1986 JP 24172586
11.10.1986 JP 24172686

(71) Applicants:
  • UC INDUSTRY CO., LTD.
     ()
  • TONEN SEKIYUKAGAKU KABUSHIKI KAISHA
     ()

(72) Inventors:
  • Nagayoshi, Akio
     ()
  • Nagayoshi, Kiyoharu
     ()

   


(54) Apparatus for manufacturing a resin tube


(57) Apparatus for manufacturing a resin tube compri­ses: support means (2); a central shaft (4) supported by the sup­port means and extending therefrom; a pair of operating means (12a,12b) supported by the central shaft at two separate posi­tions; a plurality of rotatable forming rolls (7) each sup­ported by the operating means at both ends thereof in such a manner that the rotatable forming rolls are arranged cir­cularly around the central shaft (4) and that a cylindrical enve­lope formed by the rotatable forming rolls has a radius changeable by operation of the operating means; and a plurality of flexible link means each connected between one end of each rotatable forming roll (7) and a driving means (M) for simultaneously rotating the rotatable forming rolls in the same direction at any radius of the envelope. Because of this structure, the apparatus can manufacture a resin tube of any size simply by operating the operating means.







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